Fixed expressions
Idioms
English fixed expressions — phrases whose meaning isn't obvious from the individual words. Each entry shows the meaning, an example sentence, and its register.
Idioms containing brain, including its inflections. Clear word filter
4 idioms
brain power
CEFR B1intelligence or mental ability used to think and solve problems
Informal
not rocket science
CEFR B1not difficult to understand or do
Informal
Matching variant: not brain surgery
pick someone's brain
CEFR B1to seek ideas or guidance from someone with useful expertise
Neutral
rack your brains
CEFR B2To think very hard in an effort to remember or solve something.
Informal